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- It can be considered a multi stage carburizing. 这一过程可以看成是一个多段渗碳过程。
- The construction of ash dam in Weishui Power Plant adopts the multi stage pulverized coal ash subdam technology. 微水电厂贮灰坝的施工采用了多级粉煤灰子坝技术。
- Frequent leakage of mechanical seal of quenching oil circulating pump was a hard problem in ethylene production. 急冷油循环泵的机械密封频繁泄漏是困扰乙烯生产的老难题。
- Cabinet heaters, circulating pump motors and other devices which draw relatively high currents may be powered locally. 引起相对较高电流的机柜加热器、循环泵电机及其它设备可以就地供电。
- The mathematic model of one dimensional multi stage carburation is obtained and it can describe every physical phenomenon in carburation. 该文建立了多段法渗碳的一维数学模型,用此数学模型能够清晰地描述渗碳过程中每一时段的物理行为。
- The better technological process now is the step control of carbon potential during carburizing.It can be considered a multi stage carburation. 目前最佳渗碳工艺方法是在整个渗碳过程中对碳势进行台阶式控制,这一过程可以看成是一个多段渗碳过程。
- Reliability design of V-belt drive get not only a small size??light wight but also high reliability in the circulating pump. 讨论了泵中V带传动的可靠性设计与传统设计比较,不仅根数少、尺寸小、质量轻,而且可靠性高。
- Raw dextran was separated and purified by multi stage ultrafiltration according to the different ranges of molecular weight. 通过采用分级超滤的方法以不同的分子质量范围对右旋糖酐粗品进行分离纯化,并分析右旋糖酐在不同分子质量范围内的分布。
- It consists of starting separator, boiler circulating pump, and other connecting pipes and valves on steam and water sides. 它包括启动分离器、炉循环泵及其它汽侧和水侧连接管、阀门等。
- Some problems concerning the design theories and optimization of multi stage decompression and micropore jet composite (MDMJC) mufflers are systematically analyzed. 对多级降压小孔喷注复合型消声器设计理论与优化方法中存在的问题进行了分析，介绍了为改善这些问题所做的一些探索工作。
- The applied plan is introduced of fre quency control system by the microco mputer for constant -pressure wa-ter supply to circulating pump stati ons,and the system is analysed. 介绍了微机控制变频恒压供水系统在循环泵站中的应用方案,并对系统进行了分析。
- Establish the simulated calculation approach for simple sequential heat exchanger system and optimization for the multi stage sequential heat exchanger system. 建立简单序贯换热器系统的模拟计算方法，并优化设计多级序贯换热器系统。
- Type LW pump is vertical single-stage single-suction volute centrifugal pump.It is used for circulating pump in power station and water drainage in mines, cities and farmlands. LW型泵立式单级单吸蜗壳离心泵,适用于大型火力发电厂作循环泵,也可作工矿、城市及农田建设的排水泵。
- Its products can be categorised in sturcture to single shaft and multi stage compressor, multi shaft and multi stage compressor, single stage compressor, fans, etc. 其产品按结构形式分为单轴多级式压缩机，多轴多极式压缩机，单级式压缩机，离心式风机等;
- Haohua astronavigation chemical co.,ltd. adopts high voltage frequency converter for motor speed adjustment of water circulating pump and achieves obvious effect. 摘要昊华宇航化工有限公司采用高压变频器进行循环水泵电动机调速，节电效果显著。
- The Houjiangqiao Pb Zn deposit features multi source, multi stage in mineralization, which is mainly related to Devonian strata and hydrothermal activity. 后江桥铅锌矿具有多源、多阶段成矿特点,成矿主要与泥盆纪地层及热液作用有关。
- Economics is studied on steam injector substituting the tube-shell heat exchanger and the circulating pump in the heating system of the thermal power plant. 针对热电厂供热系统采用升压加热装置改造热网加热器和循环水泵的可行性和经济性开展了研究。
- General central air condition system is composed of refrigerator, circulating pump, water supply pump, water divider, catchment device and end equipment. 常见的余热制冷中央空调系统由制冷机、循环泵、补水泵、分水器、集水器以及末端装置等组成。
- The mathematical model of multi stage carburizing is a linear partial differential equation, and superposability is an important property of the linear partial differential equation. 多段法渗碳的数学模型是线性偏微分方程。线性偏微分方程的一个重要性质是可迭加性。
- Methods A small Distributed Control System(DCS) composed of Programmable Logic Controller(PLC) and WinCC is used to realize the control of circulating pump by PLC programmingand WinCC configuration. 方法 利用可编程逻辑控制器PLC和 Win CC组态软件组成小型开放性集散控制系统 ( DCS) ;根据控制系统软件的设计要求 ;通过对PLC编程以及 Win CC的组态实现系统控制 .
